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Vostok, Lake

(Encyclopedia)Vostok, Lake väˈstôk [key], c.3,900 sq mi (10,000 sq km), c.155 mi (250 km) long and 30 mi (50 km) at its greatest width, in East Antartica beneath the remote Vostok research station. One of the la...

neutrino astronomy

(Encyclopedia)neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light. Approximately 100 billio...

polar bear

(Encyclopedia)polar bear, large white bear, Ursus maritimus, formerly Thalarctos maritimus, of the coasts of arctic North America, Asia, and Europe. Polar bears usually live on drifting pack ice, but sometimes wand...

Nordenskjöld, Nils Adolf Erik, Baron

(Encyclopedia)Nordenskjöld, Nils Adolf Erik, Baron nĭls äˈdôlf āˈrĭk no͞orˈdənshöld [key], 1832–1901, Swedish geologist and arctic explorer, first to navigate the Northeast Passage, b. Finland. He ser...

Jágr, Jaromír

(Encyclopedia)Jágr, Jaromír, 1972–, Czech ice hockey player, b. Kladno. Jágr played professional hockey in Czechoslovakia as a teenager, and joined the Pittsburgh Penguins of the National Hockey League in 1990...

Mars, in astronomy

(Encyclopedia)Mars, in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Mars has two natural satellites, discovered by Asaph Hall in 1877. The innermost of these, Phobos...

Greenland Sea

(Encyclopedia)Greenland Sea, arm of the Arctic Ocean, off the northeast coast of Greenland between Svalbard and Jan Mayen Island. It is the main outlet of the Arctic Ocean to the Atlantic. Because of drifting arcti...

Arctic, the

(Encyclopedia)CE5 Arctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30′N) but are usually defi...

Moberly

(Encyclopedia)Moberly mōˈbərlē [key], city (1990 pop. 12,839), Randolph co., N central Mo.; inc. 1868. Its manufactures include instant ice packs, automobile components, and gym equipment. Limestone quarries ar...

McClure, Sir Robert John Le Mesurier

(Encyclopedia)McClure, Sir Robert John Le Mesurier, 1807–73, British arctic explorer. He entered the navy and in 1848 accompanied Sir James Clark Ross to the arctic. As a naval captain he was given command (1850)...